Lecture 5, Mon 10/16

Remote Login via ssh, Boolean expressions, Conditionals if-else

Resources from lecture

• Link to all code written in lecture

• Link to lecture slides and peer instruction questions

• Guidelines for using peer instruction - thanks to Dan Zingaro

Announcements:

• Upcoming lab- Tuesday 10/17: Drawing basic shapes using turtle - lab03
• In class assignment ic02 - worksheets will be given out during Tuesday labs. Complete and submit in lab. If you don’t submit in lab, bring to Wed lecture and submit next week in lab.This is a companion worksheet for project01. Please read lab03, project01 and this worksheet before coming to the Tuesday labs

Topics

• Remote Login via ssh

• https://ucsb-cs8.github.io/topics/csil_via_macos/

• https://ucsb-cs8.github.io/topics/csil_via_windows/

For Mac OS

• Install XQuartz from https://www.xquartz.org/

• Use this, but substitute YOUR username in place of username, and any number from 01 to 48 in place of 04:

ssh -X username@csil-04.cs.ucsb.edu

Password reset for CSIL accounts:

https://accounts.engr.ucsb.edu

If you get this error:

_tkinter.TclError: no display name and no $DISPLAY environment variable

then either:

• (a) you forgot the -X on the ssh -X command OR
• (b) you lost the X11 part of your connection (disconnect and start over), OR
• (c) you didn’t install XQuartz on Mac

The if __name__ == "__main__" block

https://ucsb-cs8.github.io/ptopics/main_blocks/

Other topics

• Boolean expressions
• Conditionals if-else
• Review of for loops